Pipe bender



' Jline 10, 1930. M E. JOHNSON 11 22 I PIPE Bmnmfi Filed July 26, -192s i W N d" W ZZ Y'ZZZ T? Patented Jane 10, 1930 UNITED STATES AT NT F'FIcE, l

MAIvrIN E. JOHNSON, or CH CAGO, IL INoIs, AssI'qNoR or ONE-HALF remix .1. win

son, or WINNETKA, ILLINOIS PIPE E I EB- I Application filed' July as,

devices, particularly those devices serving as holding appliances for the pipeor con-, duit while the pipe is bent by a force exerted on the pipeitself by the workmanior the operator. v V Devices of the above general character are not new, but most of them are complicated, expensive to manufactureand often difficult touse. Many are not susceptible of use in places where it may be desired to use them as, for instance, when a workman is standing onhis scaffold or platform and it becomes necessary for the workman to dismount from the platform, to-do the bending of the pipe or oonduit as theca's'e:

One of the primary objects of .thei'nven- -tion,therefore,-is to provide a pipe bending or holding device simple and inexpensive toconstruct and one which will have no com plicated or moving parts'to get out of order or break. i V Another important object is to provide a device of the aforesaid character susceptible of use for-bending a conduit or pipe ofoval cross section and tobend such pipe or con-. duit at an angle to either its major or minor cross sectional axis. j f

A further object is to provide in ajpipe bending device or appliance an arrangement whereby the portion of the pipe that will be grasped by the workmans hands and against which his force will be exertedwill project into. an accessible position witherespect to his position on a scaflold orthelike' even though the device itself may be situated on the side or other'lateralportion 0f the scafiold. In this connection it may be 1116115 tioned that the slots of what maybe termed the fulcruming and forming members,- proj ections or elements, as they may be various- 1y termed, are so arranged that the-pipe when disposedbetween the fulcruming and forming elements with thedevice {secured to "I aside or laterallyfacing portion of the scaffold or other structural support, may be placed in a position toparallel-the edge of the platform of the scaffold or to roject :thereover atiits end upon which the orce is stood. The forming lug or'element 6;is;. V n

1928. Serial.1 1'o.295,446. I I to'be exerted into an accessible position for I the grasp, of the workman. V 7

Still further objects, advantages, usesand purposes oftheinvention will be or should become readily appreciated after perusing 1 the following description and claims,' and after'viewing the drawing in which V Fig. 1 is a perspective. view of a usual form of scaffold arrangement showing one form of my invention applied thereto, 0 Fig. 2 is a front elevational View of the form of the device illustratediin Fig. -1'attached to a fragment of ascaffold and show-' ing two positions of a piece ofoval conduit disposed between the'fulcruming and form+ ing elements orprojectionsj ready to be bent.

Fig. 3is a side elevational view. ofJthe device illustrated in Fig. 2' looking frornthe right-hand side of this figure, and

Fig.4is' a top planview of the" device illustrated in Fig. 2. w I The device in the form illustrated" come I prisesa base plate or member 2 therear side of whichis adapted to lie against and be secured to a suitable supporting structure through theintermediary of lag screws or: bolts 3 which are passed through openings 4 into the support, and the front side of which carries a fulcruming lug or projection 5 and aforming lug or projection Gsecured' thereto in any suitable .manner. In the il- Y lustrated embodiment the "device is a unitary I casting, the lugs 5- and (iv-being cast integrally therewith; The three holes in each of what may be termed the top iand bottom'ends of the deviceareprovided-so that the device may be} adjusted to any desirable .angle and. secured in such position, as will be- -underprovided with two forming grooves and 8 of greater depth than width, extending transversely of and through what maybe calledthe inneror upper side in order to receive the oval conduit; for bending? the same about a minor axis asaj pivot, although, as will more clearly appear hereinafter, the pipe may be bent about the major axis. The depth of the grooves 7 and 8 is preferably suflicieht to hold the pipe against turning,

' when l bending pressure is; applied because we the workman with a short length of pipe may have all he can do to effect the bending without having to keep the pipe or conduit figure is designated 14.

ing. The groove 9, however, is flared slight-' 1y at its end toward the forming element 6, as shown at 11, and preferably slightly moreon its side toward the base member 2, as shown at 12. The axes of the grooves 7 and 9 are preferably so disposed that they are practically in alignment and parallel the 'pla-neof the base member 2, flaring at 11 permitting a slight amount of play so that there will be no sticking. The axis ofthe groove 8, however, is disposed at an angleto theaxis of the groove 7 and so that its projection will make an acute angle with the projection of the plane of the base to the leftiviewing Fig. 2, although the flaring at 12 permits the pipe or conduit to be disposed through the groove 9 even in this position. 7

,When the pipe 10 is disposed through the grooves 7 and 9 with the device'mounted in a' position such as that illustrated in Fig. l,

the pipe will extend substantially parallel the edge of the scafiold platform 13. This may be satisfactory in some instances, but if the: platform be narrow or for some other reason the'workman is obliged to lean out over the edge .thereof to reach the pipe or ,to bendit, a slip may mean a serious fall.

To minimize this danger, if the pipe be disposed throughthe grooves 8 and 9, the end of the pipe on which the workman will bear downwardly projects inwardly'toward the workman and over the platform 13, as

will be appreciated from Fig. 4. The inwardly projecting end of the pipe in this For the purpose of permitting an oval wpipe or conduit to be bent about its major axis as a pivot the fulcruming and forming elements 5 and 6 may be provided with shallow aligning grooves15 and 16. The pipe may thus be laid on its side as illustrated at 10 in Fig. 2 and bent to the desired extent aboutone of its major axes as a pivot. The shallow groove 15 flares upwardly slightly toward the groove 16 in the forming element G, as shown at 17, to cant the pipe slightly upwardly while the bottom of the groove 16 is slightly rounded, as shown at 18, toininimize the possibility of an edge biting into or cutting the pipe or conduit as being bent. The bending-edges of the grooves or slots 7 and 8 may likewise be rounded off, as shown at 19.

I have illustrated and described what is at present a preferred form of the invention,- but it will undoubtedly be appreciated that the invention, may be embodied in devices bearing little if any structural resemblance thereto. It should also be understood that by the term scaffold asused in the de scription and claims I mean any supportingstructure whether it be a ladder, temporary interior or exterior building scaffold or other supporting device for a workman, his work or the bender. Consequently, I do not wish to be limited except by the spirit of the in vention and the scope of the appended claims.

Y I claim:

1. A pipe bender for bending oval conduit and the like comprising a member having means whereby it may be secured to a support and a pair of spaced projections extending from the same side thereof and in the same general direction therefrom, a transversely extending groove of substantially greater depth than width in one side of one of said projections and a transversely extending groove in the correspondingly opposite side of the other projection, said grooves registering with one another and be ing adapted to receive through them a piece of pipe to be bent said projections also having substantially aligned shallow grooves adapted to receive the oval conduit with its major axis perpendicular to the general plane of said member.

2. A pipe bender comprising a 'plate having means whereby it maybe secured to a support with one side thereagainst, and a pair of shaped forming elements projecting from the opposite side of the plate and in the same general direction, each of said elements having a transverse groove aligned and registering with the groove .1n the other, said elements being so arranged-with respect to said plate that an extension of the axes of said grooves in one direction will'intersect and make an acute angle with an extension of the plane of said: plate.

3. A Y pipe bender "comprising a plate adapted to be secured to a support with one side thereagainst, and a pair of forming elements projecting from said plate in spaced relation to one another, one of said elements having a groove therein and the other of saidelements having two spaced grooves therein, the last said two grooves each being substantially aligned with the first said groove and one of said two grooves being so directed that'an extension of the line of its axis in one direction will intersect an extension of the plane of said plate.

4. In a pipe bender for use with a scaffold having a platform, and a supporting element for said platform, a pipe bender,

means for securing saidbender to an outer thereof in one direction will intersect an surface of said supporting element within extension of the plane of said plate.

In witness of the foregoingI aflix my-s1greach from said platform, said bender comprising a plate adapted to-be secured to a support with one side thereagainst, and a pair of forming elements projecting from,

said plate, in spaced relation to one another, one of said elements having a transverse groove therein and the other of said elements having two spaced transverse'grooves therein, the last said two grooves each being substantially aligned with the first said groove and one of said two grooves being so directed that an extension in one direction of the line of its axis will intersect an extension of the plane of said plate. V

5. In a pipe bender for use with a scaffold having a platform and a supporting element for said platform, means for securingsaid pipe bender to an outer surface of said supporting element within reach from said platform, said bender comprisinga platesecured to said supporting element with one side against the element, and a pair of forming elements projecting from said plate, in spaced relation to one another, each of said elements having a transverse groove aligned and registering with the groove in the other,

nature.

said groovesbeing so disposed relatively to said plate that an extension of their axes in one direction will intersect a continuation of the plane of said plate so as to project over said platform.

6. In a pipe bender for use with a scaffold having a platform, and a supporting element for said platform, means for securing said pipe benderto an outer surface of said supporting element within reach from said platform, said bender comprising a plate adapted to be secured to said supporting element with one side thereagainst, and a pair of forming elements projecting from said plate, in spaced relation to one another, one of said elements having a transverse groove therein and the other of said elements having two spaced transverse grooves therein, the last said two grooves being so disposed relatively to said plate that an extensionof the axis of one of said grooves in one direction will intersect an extension of the plane of said plate, the first of said grooves being of greater width than said latter two grooves.

7. A pipe bender comprising a plate adapted to be secured to a supporting element and a pair offorming elements projecting from said plate in spaced relation to p one another, one of' said elements having a transverse groove therein, said groove .hav-

. ing its terminating edges roundedandthe other of said elements having two spaced transverse grooves therein, one of the last said two grooves being so disposed relatively to said plate that an extension of the axis MARTIN JOHNSON.

no I

CERTIFICATE OF CORRECTION.

Patent No. 1,762,230. Granted June 10, 1930, to

MARTIN E. JOHNSON.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 105, claim 2, for the word "shaped" read spaced; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the casein the Patent Office.

Signed and sealed this 9th day of September, A. D. 1930.

M. J. Moore,

(Seal) Acting Commissioner of Patents. 

